Graphene Coating on Display Glass for UV Protection

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Solution Overview

Problem

Artwork is prone to fading, yellowing, and discoloration due to exposure to UV radiation and other environmental factors, with existing protective methods being inadequate or harmful, and there is a need for efficient and easily applicable solutions to safeguard valuable art pieces.

Innovation Solution

A protective graphene coating is applied to a glassy surface, situated between the artwork and the source of radiation, using chemical vapor deposition to create a continuous graphene membrane that absorbs UV radiation and other detrimental light, providing a shield that can be easily applied and removed without impairing the appearance of the artwork.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resin-based protective systems are applied to artworks, then protection is provided, but the underlying surface is irreversibly affected

Engineering Contradiction:
Improveprotection effectivenessVSAvoidsurface integrity
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent applies a thin film of graphene (one or few layers) onto the artwork surface or protective glass. This ultra-thin film provides protective functions while being visually transparent and physically flexible, avoiding the irreversible damage caused by thick resin coatings. The graphene layer acts as a barrier against UV radiation and environmental factors without chemically bonding to or altering the underlying artwork surface.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The invention combines graphene with protective glass to create a composite protective system. The glass provides structural support and basic protection, while the graphene coating adds enhanced UV blocking and chemical resistance properties. This composite approach achieves superior protection without requiring invasive resin application that would damage the artwork.

Inventive Principle:
Principle #40Composite materials

2Strength

If conventional glass display cases are used, then artwork is physically protected, but adequate protection from UV radiation and damaging agents is not provided

Engineering Contradiction:
Improvephysical protectionVSAvoidUV radiation damage
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the optical parameters of the protective glass by coating it with graphene. This thin coating dramatically changes the UV transmission properties of the glass, blocking harmful UV radiation while maintaining visible light transparency. The physical strength of the glass remains unchanged, but its protective capability against radiation is significantly enhanced.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The graphene coating acts as an intermediary layer between the artwork and the external environment. It serves as a mediator that selectively blocks harmful UV radiation and chemical agents while allowing visible light to pass through. This intermediary layer provides the missing protection that conventional glass alone cannot deliver.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If LED illumination is used to replace UV-emitting lights, then UV damage is reduced, but illumination quality deteriorates and cost increases

Engineering Contradiction:
ImproveUV radiation exposureVSAvoidlighting quality
Core Design Contradiction:
Object-affected harmful factorsVSIllumination intensity

Solution Approach 1:

Instead of trying to fix the LED illumination quality problem, the patent extracts and blocks the harmful component (UV radiation) at the source or along the light path. By coating the protective glass with graphene, UV radiation is blocked before reaching the artwork, while allowing the LED's visible spectrum to illuminate the artwork adequately. This approach sidesteps the need for expensive specialized LEDs.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the potential harm of using standard LEDs (which may emit some UV or have poor color rendering) into a benefit by adding the graphene coating. The coating filters out harmful components while preserving or even enhancing the visible illumination quality. This transforms a problematic situation into an advantageous solution.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Reliability

If continuous graphene coating is applied directly to three-dimensional artwork, then complete protection is achieved, but application becomes difficult on irregular surfaces

Engineering Contradiction:
Improveprotection completenessVSAvoidcoating applicability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

Instead of applying graphene directly to the complex three-dimensional artwork surface (which would be difficult), the patent inverts the approach: it applies the graphene coating to a flat or simpler protective glass surface first, then positions this coated glass in front of the artwork. This reversal of the application sequence makes the process much easier while still providing complete protection.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The protective glass serves as an intermediary substrate that facilitates the graphene application process. By coating the glass instead of the artwork directly, the patent uses a accessible, flat surface as a mediator. The glass then becomes the carrier of the protective coating, positioning it between the artwork and the environment without requiring direct coating of the complex artwork surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The graphene coating effectively protects artwork from fading, yellowing, and discoloration by absorbing UV radiation and other harmful components, while being invisible and non-intrusive, offering a reliable and affordable solution for both new and existing display cases.

Implementation Method 1

graphene coating...which are able to absorb UV radiation and other detrimental parts of visible light or artificial illumination

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 2

depositing, preferably by chemical vapor deposition (CVD), graphene onto a at least one side of a supporting substrate

Methodology Applied
Scientific EffectChemical vapor deposition: Chemical Vapour Deposition

Data Source

PatentEP4039848A1Use of graphene and other 2d materials for the improvement of properties of commercial glazing and showcases
Publication Date: 2022.08.10 FOUNDATION OF RES & TECH INST OF CHEM ENG SCI
  • EP4039848A1 patent drawingFigure 1A~1B
  • EP4039848A1 patent drawingFigure 2
  • EP4039848A1 patent drawingFigure 3

AI summary

The invention relates to the use of a protective graphene coating for providing protection for a two- or three dimensional artwork or a colored surface against color degradation, especially fading, yellowing and discoloration, due to exposure to UV radiation or other radiation, the use comprising applying the graphene coating onto a glassy surface, which is or will be situated between the artwork and the source of radiation, by a method comprising the following steps: a) depositing, preferably by chemical vapor deposition (CVD), graphene onto a at least one side of a supporting substrate to produce a graphene/substrate composite including a continuous graphene membrane formed on at least one side of said substrate; b) removing the substrate, or lifting off the graphene from the substrate and c) depositing the graphene membrane onto the surface. Furthermore, the invention relates to protective screens or display case, which comprise a glassy material at least one surface of which is coated by a protective graphene coating.